Answers to Test Yourself

(1) Probability samples are typically better representatives of the population they are drawn from because the probability of an individual being chosen is determined ahead of time and controlled through random sampling. (2) Many studies use convenience samples because it can be difficult to identify all the members of large populations to randomly select them. (3) There are several ways to do this, but the key is to use a convenience sample of students at the school in the same proportions as they exist at the school based on years in school and gender. These proportions will need to be known before the sample is selected. You will also need a recruitment technique (Internet with e-mail contact, surveys mailed to campus address, etc.) to describe how to administer your survey. (4) Internet samples tend to be more diverse than other samples; they can be collected using fewer resources and in a shorter period of time. (5) d. (6) b. (7) b. (8) population; sample. (9) simple random. (10) b.